Engine Oil Drain Pump; Changing Filter - Mercury 4.3 TKS series Operation & Maintenance Manual

Section 4 - Maintenance
1. Loosen the oil filter to vent the system.
a
a - Bilge drain plug
b - Tether
c - Clip
d - Oil drain hose plug
e - Oil drain hose
f - Bilge drain flange
2. Remove the bilge drain plug.
3. Pull the tether through the bilge drain.
4. Place the oil drain hose in a suitable container.
5. Remove the oil drain hose plug from the oil drain hose.
6. After the oil has drained completely, install the oil drain hose plug in the oil drain hose.
7. Push the hose through the bilge drain and install the bilge drain plug.

Engine Oil Drain Pump

1. Loosen the oil filter to vent the system.
2. Remove the dipstick.
3. Install the oil pump onto the dipstick tube.
a
b
4. Insert the hose end of the crankcase oil pump onto an appropriate container and, using the handle, pump until the
crankcase is empty.
5. Remove the pump.
6. Install the dipstick.

Changing Filter

1. Remove and discard the oil filter.
2. Coat sealing ring on new filter with engine oil and install.
3. Tighten the oil filter securely (following filter manufacturer's instructions). Do not overtighten.
4. Remove the oil fill cap.
IMPORTANT: Always use the dipstick to determine exactly how much oil is required.
5. Add the recommended engine oil to bring the level up to the bottom of the OK range on the dipstick.
6. With the boat at rest in the water, check the oil level and add the specified fluid to bring the oil level up to, but not over, the
FULL or OK range.
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c
b
c
mc70571-1
d
a - Typical oil pump
b - Dipstick tube
c - Oil drain hose
e
90-8M0113857 DECEMBER 2015
eng
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